Angela believes that all older people are forgetful. Angela is demonstrating a) a self-fulfilling prophecy. b) the fundamental attribution error. c) cognitive dissonance. d) stereotyping. e) a dispositional cause.

The correct option is: d) stereotyping

Explanation:

A stereotype is a preconceived idea or belief about the characteristics of a particular group of people like ability, skill, preference, character or personality. It is an over-generalized notion, as it is assumed to be true for all the members of a group.

It can also be described as an expectation that people have about other individuals of a group. There are two types of stereotypes: implicit and explicit.

Therefore, Angela is demonstrating stereotyping.